Annotation of loncom/html/adm/help/tex/Physical_Units.tex, revision 1.1
1.1 ! www 1: \label{Physical_Units}
! 2: \section*{Physical Units Accepted by LON-CAPA}
! 3: The following subsections show the physical units that LON-CAPA accepts.
! 4: The symbols must be used when entering the units, for example {}``35 kg''.
! 5: \subsection*{Base Units}
! 6: \begin{verbatim}
! 7: # name symbol comment
! 8:
! 9: meter m # length
! 10: kilogram kg # mass
! 11: second s # time
! 12: ampere A # electric current
! 13: kelvin K # thermodynamic temperature
! 14: mole mol # amount of substance
! 15: candela cd # luminous intensity
! 16: \end{verbatim}
! 17: \subsection*{Prefixes}
! 18: \begin{verbatim}
! 19: # Prefix symbol factor
! 20:
! 21: yotta Y 10^{24}
! 22: zetta Z 10^{21}
! 23: exa E 10^{18}
! 24: peta P 10^{15}
! 25: tera T 10^{12}
! 26: giga G 10^9
! 27: mega M 10^6
! 28: kilo k 10^3
! 29: hecto h 10^2
! 30:
! 31: deci d 10^-1
! 32: centi c 10^-2
! 33: milli m 10^-3
! 34: micro u 10^-6
! 35: nano n 10^-9
! 36: pico p 10^{-12}
! 37: femto f 10^{-15}
! 38: atto a 10^{-18}
! 39: zepto z 10^{-21}
! 40: yocto y 10^{-24}
! 41: \end{verbatim}
! 42: \subsection*{Derived Units}
! 43: \begin{verbatim}
! 44: # Derived Unit
! 45: # name symbol comment
! 46:
! 47: gram g # mass
! 48: hour hr # time
! 49: minute min # time
! 50: day day # time
! 51: year yr # time
! 52: pound lb # mass
! 53: ounce oz # mass
! 54: inch in # length
! 55: foot ft # length
! 56: mile mi # length
! 57: yard yd # length
! 58: nautical_mile n_mi # length, nautical mile (UK)
! 59: rood rood # area, rood
! 60: acre acre # area, acre
! 61: hertz Hz # frequency
! 62: litre L # volume
! 63: newton N # force
! 64: pound_force lbf # force
! 65: dyne dyn # force
! 66: pascal Pa # pressure, stress
! 67: bar bar # pressure
! 68: mmHg mmHg # pressure, millimeter of mercury
! 69: torr torr # pressure
! 70: atm atm # standard atmosphere
! 71: joule J # energy, work, heat
! 72: electronvolt eV # energy
! 73: calorie cal # energy
! 74: Btu Btu # energy
! 75: watt W # power, radiant flux
! 76: coulomb C # electric charge
! 77: volt V # electric potential, electromotive force
! 78: ohm ohm # electric resistance, use this in /ANS
! 79: ohm ohms # electric resistance
! 80: ohm Ohm # electric resistance
! 81: ohm Ohms # electric resistance
! 82: siemens S # electric conductance
! 83: farad F # electric capacitance
! 84: tesla T # magnetic flux density
! 85: weber Wb # magnetic flux
! 86: henry H # inductance
! 87: radian rad # plane angle
! 88: degree deg # plane angle (Pi rad=180 deg)
! 89: steradian sr # solid angle
! 90: lumen lm # luminous flux
! 91: lux lx # illuminance
! 92: becquerel Bq # activity (radioactive)
! 93: gray Gy # absorbed dose (of radiation)
! 94: sievert Sv # dose equivalent (dose equivalent index)
! 95: astroUnit AU # mean distance earth to sun
! 96: \end{verbatim}
! 97: \subsection*{Interpretation}
! 98: The coded units are interpreted in the order of basic unit,
! 99: derived unit, then prefix. For example, ``T'' will be matched against
! 100: ``tesla'' instead of considered the prefix ``T''. Another example is that
! 101: ``min'' will match
! 102: ``minutes'' instead of treated as a combination of the prefix ``m'' and units.
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